1. Tunnel Boring Machine Segment Erector
We have recently realized one 4 ton- segment erector for a TBM (Tunnel Boring Machine) designed for an excavation project outside Mae Ngat, Thailandia.
The Tunnel Boring machine, for which the segment erector is intended, shall have a cutterhead of 4.9 m in diameter and will be used to excavate an hydraulic tunnel on site.
The erector comprises a rotating structure controlled by two planetary gears with sprocket drives and a crown wheel. The structure is supported by six rollers and moves on chromium-plated tubular guides.
The erector is equipped with a mechanical pick-up unit in order to grasp segments.(pick-up two pins). The mechanical pick-up unit grasps and retains segments for the entire duration of the positioning operations with three independent movements:
- Swinging = 6°
- Pitch = 6°
- Roll = 6°
Erector technical data:
- Longitudinal stroke= 1,800 mm
- Overall rotation = ± 200°
- Rotational speed = 2 rpm/minute
- Maximum load = 4 ton
- Weight = 19,000 Kg
- Intrados diameter = 4,200 mm
Link to our website: http://galbiatigroup.it/custom-built-machines/tbm-erector/
2. Video: Segment erector for TBM
Galbiati Group has recently designed and built a segment erector for TBM (Tunnel Boring Machine), rotating head with a maximum capacity load of 4 ton, for an excavation project in Mae Ngat, in Thailandia.
Below some videos realized at Galbiati workshops during the final testing of the Tbm segment Erector.
- Axial stroke of the erector.
Link to Youtube: https://www.youtube.com/watch?v=zKGHL7jKio0
- Mechanical pick up unit movement.
Link to Youtube: https://www.youtube.com/watch?v=Pb68K-Aungs
- 90° rotation of segments.
Link to Youtube: https://www.youtube.com/watch?v=uE7L0-OdXGI
- Tilting of gripper.
Link to Youtube: https://www.youtube.com/watch?v=DE-HPX9E_yY
Link to our website: http://galbiatigroup.it/custom-built-machines/video-erector/
3.Segment Erector for Tunnel Boring Machine
Galbiati Group has recently realized one 3.5 ton- segment erector for a TBM (Tunnel Boring Machine) designed for an excavation project outside Shanxi, China.
The erector comprises a rotating structure controlled by two planetary gears with sprocket drives and a crown wheel. The structure is supported by six rollers and moves on chromium-plated tubular guides.
Below photo of the TBM segment erector set up entirely in the assembly area of Galbiati’s workshop.
The erector is equipped with a mechanical pick-up unit in order to grasp segments. (pick-up two pins).The mechanical pick-up unit grasps and retains segments for the entire duration of the positioning operations with three independent movements:
Swinging = 6°
Pitch = 6°
Roll = 6°
- Axial and radial empty stroke of the erector.
Link to Youtube: https://www.youtube.com/watch?v=SH0QxgN67qY
- Pick up operation and radial and axial translation of the erector.
Link to Youtube: https://www.youtube.com/watch?v=M0b2cIhikfM
Erector technical data:
- Longitudinal stroke= 1,600 mm
- Overall rotation = ± 200°
- Rotational speed = 2 rpm/minute
- Maximum load = 3.5 ton
- Weight = 13,500 Kg
- Intrados diameter = 3,400 mm
Link to our website: http://galbiatigroup.it/custom-built-machines/erector-tbm/
4. Cutterhead Supports for tunnel boring machine (TBM)
We have recently developed two Cutterhead Supports for the cutter head of a TBM designed for an excavation project in Albania.
Below are a few photos of the TBM control units set up entirely in the assembly area of Galbiati’s factory
Some technical data of the Cutterhead supports: a bearing support 4.2 metres wide with a roller bearing 3.2 metres in diameter, 10 planetary gears with a transmitted power of 210 kW each, and a lubrication system. Gross weight: 60 tons.
Handling of the Cutterhead supports at Galbiati’s factory and the subsequent packaging and transport of these were particularly complex due to the size and weight of the supports.
The Tunnel Boring machine in question, for which the control units were intended, will have a cutter head for drilling a tunnel on site for the promising “Devoll Hydropower Project” in Albania. The project will involve use of the water resources of the River Devoll which is about 70 km long and situated south-east of the capital of Tehran, and the construction of a water supply network at Moglicë and Banjia, comprising a hydraulic tunnel in the rock about 6.7 km long. The project is expected to be completed by 2018 and will produce about 729 GWh of electricity a year, providing Albania with a 20% annual increase in electrical energy.
Link to our website: http://galbiatigroup.it/custom-built-machines/tbm-control-units/
5. Tunnel Boring Machine Erectors
Galbiati has recently developed two 7.5 ton- segment erectors for two hard rock double shield TBMs (Tunnel Boring Machines) designed for an excavation project outside Pfunds, Austria.
The segments erectors are made up of a fixed structure and a moving one, both made of electro-welded structural metalwork and machined on machine tools
The fixed part consists of two longitudinal beams on which the sliding guides of wear-resistant material are mounted. The mobile part, instead, comprises a fixed ring and a rotating one controlled by two planetary drives with sprockets coupled with the fifth wheel coupling with internal teeth. The segments that make up the ring are 6: the “invert” segment, or base segment, that weighs 7.5 tons, and five segments (four shoulder segments and a key segment) each weighing 6 tons.
The erectors are equipped with a mechanical pick-up unit in order to grasp segments. The mechanical pick-up unit grasps and retains segments for the entire duration of the positioning operations with three independent movements:
- Swinging = 5°
- Pitch = 5°
- Roll = 5°
A prob-drill is also provided with the erectors for carrying out additional drilling operations.
Below photos of the erectors completely assembled at Galbiati workshops.
Erectors technical data:
- Total beams length = 7,000 mm
- Overall rotation = 220° on both sides
- Rotational speed = 2 rpm/minute
- Maximum load = 7,500 Kg
- Weight = 32,000 Kg
- Intrados diameter = 6,300 mm
The Tunnel Boring machines in question, for which the segments erectors were intended, will have a cutter head 6.5 metres wide and will be used to drill a hydraulic tunnel for the promising hydroelectric project “Gemeinschaftskraftwerk Inn”. The project will involve the construction of a water supply network in Tyrol, comprising a hydraulic tunnel about 22.6 km long that will be drilled using two hard rock double shield TBMs. The network will take 4 years to complete (2014-2018) and the hydraulic tunnel will produce about 400 GWh of electricity a year from renewable sources, providing energy for more than a hundred thousand homes.
Link to our website: http://galbiatigroup.it/custom-built-machines/tbm-segments-erectors/
7. Cutterhead Supports for tunnel boring head (TBM)
Galbiati recently designed control units (Cutterhead Supports) for the rotating head of an EPB (Earth Pressure Balance) tunnel boring machine for an excavation project in Mexico City, Mexico.
Below are a few photos showing the TBM cutterhead supports made entirely in the assembly area of Galbiati’s factory.
A few technical details of the control units: cutterhead support measuring 4.5 m in diameter with roller bearing measuring 4 m in diameter, 11 planetary gear units with two-speed gearbox – transmitted power of 330KW each, lubrication system. Overall weight 130 tons.
Link to our website: http://galbiatigroup.it/custom-built-machines/cutterhead-support/
For additional information please download this PDF
